Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Nancy Kwon Hsieh, DDS, Inc

Q: What is the NPI number for Nancy Kwon Hsieh, DDS, Inc?

The NPI for Nancy Kwon Hsieh, DDS, Inc is 1609088624, a Type 2 (organization) record in the CMS NPPES registry.

General Practice Dentistry in San Francisco, CA · enumerated 2007 · authorized official Nancy Hsieh, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1609088624

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Registry record

Entity type Organization (Type 2)

Legal business name Nancy Kwon Hsieh, DDS, Inc

Practice address 3400 California St, Suite 302, San Francisco, CA, 94118

Phone (415) 567-1532

Enumeration date May 3, 2007

Last updated in NPPES Sep 11, 2025

Taxonomy & classification

1223G0001X General Practice Dentistry Dental Providers · License 50401 (CA) Primary

1223P0221X Pediatric Dentistry Dental Providers · License 50297 (CA) Secondary

Authorized official

Name Nancy Hsieh

Title Owner

Phone (415) 567-1532

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Nancy Kwon Hsieh, DDS, Inc?

The NPI for Nancy Kwon Hsieh, DDS, Inc is 1609088624, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Nancy Kwon Hsieh, DDS, Inc?

NPPES lists Nancy Hsieh (Owner) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.